Dudley



M (No Model.)

' C. G. DUDLEY.

' ERASER.

Patent ed Feb. 1, 1887-.

' WITNESSES 06 f .zZttOrney Z m m'zns, Phokn-Lilhngmpher. Waihingk'm. no

UNITED STATES- PATENT OFFICE, j

CHARLES C. DUDLEY, OF MAQIIOKETA, IOW'A, ASSIGNOR OF ONE-HALF TO WILLIAMM. WELOH, OF SAME PLACE.

- it consists in the improved construction and- ERASER.

SPECIFICATION forming part of Letters Patent No; 357,146, dated February1, 1887.

Application filed September 20, 1886. Serial No. 214,011. (No model.)

To all whom it may concern;-

Be it known that 1, CHARLES C. DUDLEY, a citizen of the United States,and a resident of Maquoketa, in the county of Jackson and State of Iowa,have invented certain new and useful Improvements in Erasers; and I dohereby declare that the following is a full, clear, and exactdescription of the invention, which will enable others skilled in theart to which it appertains to make and use the same,

reference being had to the accompanying drawings, which form a part ofthis specification, and in Which- Figure 1 is a perspective view ofmy'im material are clamped edgewise for the purpose of offering anerasing or wiping surface;- and combination of parts of such an eraser'in which the textile strips may be removed when worn and replaced withnew strips, as hereinafter more fully described and claimed.

In the accompanying drawings, the numerals 1 indicate strips, preferablyof wood, secured together by means of transverse strips 2, of springmetal, secured to the backs of the strips, and the faces of these stripsare formed with dovetailed ribs 3, forming dovetailed By pressingtogether the diverging handles the wooden strips will be tilted so as tobring their dovetailed ribs apart, and the strips of textile materialmay be inserted or removed into or from thegrooves. In this manner itwill be seen that'when the strips of textile material become worn by usethey may be removed and new strips may be inserted, so that the back ofthe eraser may be continually used, new strips being inserted when theold strips are worn.

The clamping-strips may be made of any desired material and numerouschanges may be made in their construction without departing from thespirit of my invention, the essential part of the invention being anelastic or yielding back and grooves having the edges projecting towardeach other, for the purpose of clamping the strips and biting into them,and the handles may be of different shapes, and may be either rigidlysecured or removable, the removable handles and the form of back shownand described being, however, the most desired.

Having thus described my invention, I claim and desire to secure byLetters Patent of the United States 1. In an eraser, the combination ofa back having an elastic or springing upper side and having grooves inits under side, formed with inwardly-projecting edges, strips of textile,material inserted with their edges in the grooves, and diverginghandles at the side edges of the upper face of the back, as and for thepurpose shown and set forth.

2. In an eraser, the combination of a number of stripshaving dovetailedribs upon their under sides, and having their upper faces connected bysprings seeu red to them,te xtile strips clamped in the grooves formedbetween the ribs, and diverging handles secured in the upper sides ofthe outer strips near the edges, as and for the purpose shown and setforth.

.8. In an eraser, the combination of strips having dovetailed ribs upontheir under sides, In testimony that I claim theforegoing as 10 andhaving flat transverse springs secured to my own I have hereunto affixedmy signature their upper faces, strips of textile material in presenceof two witnesses.

secured in the dovetailed grooves formed between the dovetailed ribs,and wire bails se- CHARLES C. DUDLEY. cured with their bent ends in theupper sides of the outer strips, forming diverging han- Vitnesses:

dles, as and for the purpose shown and set F. D. SMITH,

forth. E. O. WEED.

